As to the Salvation of Infants

I received the following question: "What is the basis that godly parents may not doubt about the salvation of their children when they die in infancy? W. W." The question is, of course, connected with I, 17 of the Canons of Dordrecht, which reads as follows: "Since we are to judge of the will of God from his Word, which testifies that the children of believers are holy, not by nature, but in virtue of the covenant of grace, in which they, together with the parents, are comprehended, godly...